#include<iostream>
#include<cstdio>
#include<cstring>
#include<vector>
#include<unistd.h>
#include<pthread.h>
#include "LockGuard.hpp"

using namespace std;

pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;

#define NUM 4

class threadData
{
public:
    threadData(int number)
    {
        threadname = "thread-" + to_string(number);
    }
public:
    string threadname;
};

int tickets = 300;

void* getTicket(void* args)
{
    threadData* td = static_cast<threadData*>(args);
    const char* name = td->threadname.c_str();
    while(true)
    {
        pthread_mutex_lock(&lock);
        pthread_mutex_lock(&lock);

        if(tickets > 0)
        {
            usleep(1000);
            printf("who=%s, get a ticket: %s\n", name, tickets);
            tickets--;
        }
        else
        {
            break;
        }
        usleep(13);
    }

    printf("%s ... quit\n", name);
    return nullptr;
}


int main()
{
    vector<pthread_t> tids;
    vector<threadData*> thread_datas;
    for(int i = 1; i <= NUM; i++)
    {
        pthread_t tid;
        threadData* td = new threadData(i);
        thread_datas.push_back(td);
        pthread_create(&tid, nullptr, getTicket, thread_datas[i - 1]);
        tids.push_back(tid);
    }

    for(auto thread : tids)
    {
        pthread_join(thread, nullptr);
    }

    for(auto td : thread_datas)
    {
        delete td;
    }
    return 0;
}